Alistair Duffey picks up the baton from Madelyn Hotaling's previous episode. He gives further comparison of several polar geoengineering technologies: SAI, MCB, CCT, and microspheres. Does any approach offer us a reliable and safe way to target the Arctic? \n\nPaper discussed \nSolar Geoengineering in the Polar Regions: A Review\nAlistair Duffey, Peter Irvine, Michel Tsamados, Julienne Stroeve\nFirst published: 31 May 2023\nhttps://doi.org/10.1029/2023EF003679\n\nAdditional paper mentioned\nMixed-phase regime cloud thinning could help restore sea ice\n Citation\xa0D Villanueva\xa0et al\xa02022\xa0Environ. Res. Lett.\xa017\xa0114057 DOI\xa010.1088/1748-9326/aca16d